Manhattan’s Battery Park has a whimsical carousel full of spinning, glowing fish.

The world's longest known cave system.

Costumed elves and mountain bikers co-exist peacefully at this abandoned Christmas-themed adventure park.

Oh, just a motel on the edge of the desert decorated with thousands of clowns conveniently located next to an abandoned graveyard.

Stalactites and stalagmites in a beautifully lit cave.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

A heavenly experience, right here on Terra Firma.

This South London cemetery holds the remains of more than 15,000 people.

Welcome to old Florida, where a 1940s mermaid show is still enchanting visitors.

A picture-perfect town, perfect for blowing up.

Natural time capsule containing an alien ecosystem.

A mysterious castle built as a monument to lost love.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

An underwater city for the dead.

A winding path built in secret on the edge of the continent.

The beautiful baroque library of the Hapsburg empire.

This shop for all your super spy needs hides an educational secret.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Every autumn, this hillside is ablaze with red summer cypress.

A religious-themed park filled with folk art to bring biblical stories to life that fell into disrepair and now being restored.